Montmorillonite Modified Polyacrylamide (pam), Synthesis And Properties

Polymer/layered silicate nanocomposites are an area of active interest due to their excellent performances as well as scientific issues concerning them, whichalmost have covered the polymer science limiting at enhancing mechanical, opticaland thermal properties, While the performances of water solution were not reported in literature .Choosing water soluble polyamide as matrix ,we prepared poryamide modified by organic-montmorillonite via in-situ polymerization aiming at understanding its rheologjcal properties, such as viscosity were studied under different circumstances.In ordered to obtain excellent composites, we purified montmorillonitte and exchanged it with sodium salt. The montmorillonite's cations exchange capacity of different procedures were studied in this paper , In addition ,we obtained organic clays intercalated with four kinds of onium ions, whose variety structures were characterized by Infrared and X-ray diffraction measurements. The modified PAM exhibit significant increase in intrinsic viscosity as well as salt-resistant characteristics, whose viscosity increased by 38.5% compared with PAM to a high degree,while the average PAM show decrease in intrinsic viscosity.The PAM modified by DMP-Q-clay or DMP-BQ-clay exhibits "anti-salt-effect"characteristics at such low salt concentration.Compared with co-polymer( amide co-polymerized with intercalate regents) and PAM modified by original montmorillonitte ,we draw such a conclusion: The modified PAM with viscosity enhancement and salt-resistant characteristics are obtained only by in-situ polymerization.